Care to guess my *Ameraucana*(EE) sex?

We bought these at a local pet store, they are 5 weeks now and I'm pretty sure they are EE and not Ameraucanas(that's fine with me). I've got a good track record for sexing our other birds...but we've never had EE before, so

Delta began to crow this morning. They will be 2 months next week. Now I'm wondering if Emily will also be a boy, though her comb is still more pale. They are all quite large for their age, from what I understand they are not supposed to be a large breed, but they are bigger than my SLW, Marans and Cochins of the same age. By quite a bit.